\chapter{数的开方}

\input{units/czds3-ch9-subsec1}
\input{units/czds3-ch9-subsec2}
\input{units/czds3-ch9-subsec3}
\input{units/czds3-ch9-xiti1}

\input{units/czds3-ch9-subsec4}
\input{units/czds3-ch9-subsec5}
\input{units/czds3-ch9-subsec6}
\input{units/czds3-ch9-xiti2}

\input{units/czds3-ch9-xiaojie}
\input{units/czds3-ch9-fuxi}
\input{units/czds3-ch9-fulu}

